Device for clearing flyings, lint, etc., from drawing frames, etc.



Jan. 28, 1930. T, (:OMBER 1,745,151

DEVICE FOR CLEARING FLYINGS, LINT, ETC FROM DRAWING FRAMES, ETC

Filed Sept. 9, 1929 (Hill IIHIIIHHHH Patented Jan. 28, 1930 UNITED STATES PATENT OFFICE THOMAS J'. COMBER, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO ARTHUR L. EMERY, OF CHARLOTTE, NORTH CAROLINA DEVICE FOR CLEARING FLYINGS, LINE, ETG, FROM DRAWING FRAMES, ETC.

Application filed September 9, 1929. Serial No. 391,131.

The features of the invention are applicable for the removal of loose fibers, such as fiyings, which become deposited upon covers, beams, etc., of textile machinery adjacent trumpets and other guides for slivers, rovings, and yarns, in operations performed for the conversion of fibrous materials into yarns and the like.

The invention provides a combination of clearer elements comprising a plurality of the said elements arranged in a novel rela' tionship with respect to a trumpet or the like guide of a drawing frame, or of other machine employed for drawing sliver or roving. Also, clearer elements having a novel mode of operation. Also, a novel clearer organiza: tion,

An illustrative embodiment of the invention is shown in the accompanying drawings, in which latter,

Fig. 1 is an isometric view of one delivery of a drawing frame having the said embodiment applied thereto.

Fig. 2 is a plan view of the same.

Fig. 3 is a view thereof in vertical section.

Fig. 4 is a detail view in plan, on a larger scale than Figs. 1, 2, 3.

The drawings show one delivery of a drawing frame, and represent in Fig. 3 a sliver 2 proceeding from the front drawing rolls 1 that deliver to and through a trumpet 3. They show, further, a trumpet-carrying arm 31 hung upon a pivot 32, a pair of calender rolls 4 between which the sliver passes after issuing from the trumpet-passage, a coilerhead 5 through the t ibe 51 of which the sliver passes as it is fed y the calender rolls, a cover 52 for the coiler, a support 53 for the coiler, and a coiler can 6 into which the sliver descends from the coiler-tube. At 41, Fig. 3, is shown the usual wiper cooperating with the calender-rolls. At 7 is the front beam, hollowed out underneath and receiving with in its chamber the calender-rolls, &c., so that the said beam constitutes a cover for the calender-rolls. The rear portion of the top of thesaid beam or cover is notched as shown in Fig. 3 to accommodate the wiper 41, trumpet-arm31, and the trumpet 3. The parts thus far mentioned areas heretofore.

During the operation of a drawing frame loose fibers separate from the slivers which are operated upon in such machine, and settle upon various exposed portions of the machine, including the upper surface of the beam or cover 7 In particular these fiyings are floated forward by the air-currents generated by the advancing sliver, so that they land upon the beam or cover 7 at the front of the trumpet, and accumulate in asmall pile. Some flyings land upon the beam or cover at opposite sides of the trumpet. The accumulations are increased by other like material which floats through the air from adjoining machines. If left undisturbed the accumulation before long will become two or more inches thick, and sooner or later portions of the material that is piled up at the sides and front of the trumpet will topple over upon the trumpet, or be wafted by moving air over upon it, in which case some or all of the waste will adhere to the moving sliver and be carried by the latter through the passage. The portion of waste thus becoming attached to the sliver will become incorporated in the sliver as a bunch which will remain a part of the sliver in all the succeeding stages and operations of the procedure, and so as to be present in the resulting roving and yarn. Fly collecting upon the beam or cover 7 usually becomes more or less charged with oil, so that the portion which becomes added to the sliver will produce a streak of discoloration. The bunch and discoloration will show up in the cloth into which the yarn is woven. Consequently, the yarn and cloth will be classed as seconds, with loss of value.

In general practice it has been usual for workers around drawing frames and the like to wipe off deposits of lint and flyings from time to time, with a view to the avoidance of what has been described, but unless this attention is paid at short intervals in connection with the portions of a beam or'cover adjoining a trumpet or the like such deposits will form to an extent resulting in bunches being taken up by the sliver and becoming incoporatecl therewith. Hence, if through inattention or indifference the workers neglect to perform the wiping atcomparatively frequent intervals the result is the production of defective rovings, and the yarns made from the latter will be defective.

one characteristic feature of the illustrative embodiment is the employment of three clearer rolls in connection with the trumpet 3. Two of these rolls, namely, 10, 10, are disposed at opposite sides, respectively right and left, of the trumpet, and the third, 11, at the front of the trumpet. The first mentioned two rest upon the top surface of beam or cover 7 close to the opening occupied by trumpet arm 31 and trumpet 3, so as to effect the cleaning of the said surface at both sides, transversely, of the trumpet. The third clearer roll, 11, rests upon the said top surface in front of the trumpet, so as to effect the cleaning of the said surface in advance of the trumpet. In this instance the length of the front roll is somewhat greater than the length of the respective side rolls, so that the front roll is capable of clearing an area substantially equal transversely to that cleared by the combined action of the two side rolls. The lengths of the resepctive rolls may be varied in practice, as found advisable.

For the performance of the required clearing action, a to-and-fro movement is imparted to the rolls. In this instance the to-and-fro movement is forward and rearward, and is provided for through mounting the rolls in connection with carriages 12, 12, and 13, to which reciprocating move ment is imparted by means of suitable actuating mechanism. Herein, the said carriages are connected by rods 14, 14, to arms 15, 15, Fig. 2, fixed upon a rockshaft 16 located at the rear of the machine. From an arm 17 fixed upon the said rockshaft a connecting rod 18 extends to a crank-pin 19 carried by a rotating gear-wheel 20. As the gear-wheel 20 rotates the rockshaft 16 is rocked, and through the rocking of the rockshaft the required reciprocatory traverse of the carriages and clearer rolls is produced. Through this traverse of the rolls, the latter are made effective to remove from the top surface of the beam or cover 7 all waste constituted of fiyings, lint, which may have come to rest upon such surface in the areas at opposite sides of the trumpet, and at the front thereof.

Sometimes the top surface of the beam or cover 7 is in one plane, but sometimes the rea r portion thereof is beveled or inclined downwardly toward the rear. For the purpose of accommodating such bevel or incline, I employ rear and front carriages 12 and 13, one

aving combined therewith a rear clearer roll 10 and the other having combined therewith the front clearer roll 11, and I join these two carriages to each other by a pivotal connection at 123. This jointed connection of the two carriages with each other permits play vertically, so that the respective rolls may accommodate themselves to the differ ent portions of the rail or cover upon which they respectively may rest and be caused to roll.

As one portion of the invention I combine with the rolls means permitting them to turn freely upon their individual axes in one direction, but locking them against turning movement in the reverse direction around the said axes. This means comprises a toothed wheel 21 connected with each roll, and a pawl 22 movably combined with the corresponding carriage and engaging with the said wheel. The arrangement shown in the drawing is such that as the carriages are moved rearwardly, carrying the front roll back into close proximity to the trumpet and the side rolls back at opposite sides of the trumpet, the rolls turn freely and in their travel wind up upon themselves such flyings, &c., as they encounter upon the top surface of the rail or cover 7. As the carriages are moved forwardly, the rolls, in consequence of being locked against turning in the reverse direction, slip over the said sun face so that they wipe forwardly, thereby carrying forward by a wiping action any flyings or lint that may not have been removed from such surface by the rolls in turn. ing. In this manner the side-rolls 10, 10, will carry forward to positions in advance of the trumpet any flyings or the like which may be present at the sides of the trumpet and the front roll will carry forward away from the trumpet any flyings, &c., which may be present at the front of the trumpet. For the most part, material thus wiped forward by the rolls will be taken up by the latter as they begin to turn as a result of the rearward movement of the carriages. Any flyings not taken up by the side-rolls will be wound up upon the front roll in the final portion of the rearward stroke of the carriages. The wiping action sometimes secures a more effective clearing action than when clearer rolls merely roll upon a surface which they are employed to keep clear. lVhat is claimed as the invention is 1. The combination with a guide through which a fibrous strand is conducted, and a cover-surface adjoining said guide, of coverclearers at opposite sides of the guide and a cover-clearer in front of the guide, and means for traversing the respective clearers to keep the said cover-surface free from flyings, &c., adjacent the guide.

2. The combination with a trumpet through which a fibrous strand passes, and a cover having an opening which accommo dates the trumpet, of cover-clearers at opposite sides of the trumpet and a cover-clearer at the front of the trumpet, and means for traversing the respective cover-clearers to keep the cover free from flyings at the sides and front of the trumpet.

3. The combination with a trumpet through which a fibrous strand passes, rolls between which said strand passes after leaving the trumpet, and a roll-cover extending around said trumpet, of a cover'clearer by which flyings from the said strand are removed from the top of the cover in front of the trumpet.

4:. The combination with a guide through which a fibrous strand is conducted, rolls between which said strand passes after leaving the said guide, and a cover for said rolls adjoining said guide, of cover-clearer-rolls at opposite sides of the guide and a cover-clearer-roll in front of the guide, by which the cover-top is kept free from flying at the sides and front of the guide.

5. The combination with a guide through which a fibrous strand is conducted, rolls between which said strand passes after leaving the said guide, and a cover for said rolls adjoining said guide, of cover-clearer rolls at opposite sides of the guide and in front there of, and means by which the cover-clearerrolls, respectively, are traversed back and forth to keep the cover-top free from flyings at the sides and in front, respectively, of the guide.

6. The combination according to claim 5, characterized by having combined with the cover-clearer-rolls means holding the said rolls from rotation around their individual axes while traversing in one direction and permitting such rotation while traversing in the reverse direction.

7 The combination according to claim 5,

characterized by having combined with the cover-clearer-rolls pawl and ratchet devices which hold the rolls from rotation around their individual axes while being traversed in one direction and permit such rotation while they are being traversed in the reverse direction.

8. Clearer devices comprising, the combination with a to-and-fro traversing carrier, and a clearer-roll making contact with a surface which is to be kept clear of flyings, &c., of detent-means preventing rotation of the roll while being traversed in one direction and permitting such rotation during the traverse in the reverse direction.

9. The combination with a guide through which a fibrous strand is conducted, rolls be tween which said strand passes after leaving the said guide, and a cover for said rolls adjoining said guide, of cover-clearer-rolls at the side and front, respectively, of the said guide, and means for traversing said coverclearer-rolls comprising reciprocatory carrier'sections jointed together so as to permit the rolls to follow surface-portions varying in direction.

THOMAS J. COMBER. 

